TABLE 1

Proportion of patients who would be included in the proposed definition of pre-capillary pulmonary hypertension (PH) at the authors’ institutions, based on existing referral criteria

PH centreAll patients submitted to RHCPatients with mPAP 21–24 mmHgPatients with mPAP 21–24 mmHg and PAWP ≤15 mmHgPatients with mPAP 21–24 mmHg and PAWP ≤15 mmHg and PVR ≥3 Wood units
Medical Center for Postgraduate Education, ECZ-Otwock, Otwock, Poland1242152 (12.2%)135 (10.8%)29 (2.3%)
Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK2111133 (6.3%)101 (4.8%)23 (1.1%)

Note that the referral patterns might change if the new definition of PH is adopted. mPAP: mean pulmonary artery pressure; PAWP: pulmonary artery wedge pressure; PVR: pulmonary vascular resistance.